No sound on Eumig S926

[Bob Crowther]

I had excellent sound on my newly acquired Eumig S926 GL but now I have no sound at all either from the internal speaker or external outlets. I have renewed the fuse by the amplifier circuit board but that hasn’t made any difference. Has anyone got any tips on what I should try next to get sound back. Thanks.

[Maurice Leakey]

Try the old trick of operating the recording control many times, but make sure there is no film in the projector!

[Stuart Hilliker]

Hi Bob,
I had a very similar experience with a 936 recently. My fault turned out to be corroded contacts around the external speaker socket. Try spraying contact cleaner and plugging and unplugging into the socket a few times.

[Bob Crowther]

Thanks for your suggestions but unfortunately neither of them made any difference. Still no sound at all. Any other ideas?

[Brian Fretwell]

I would say check the pressure pads on the sound heads. There is a red plastic spanner tool for retracting them to clean the heads and if not put back or it has slipped open there may be no replay.

[Osi Osgood]

This sounds so silly, but it happened to me. I was working on the inside of my projector, and simply unhooked one of the wires to the speakers, accidentally. Hooked her back up, and she was just fine.

[Maurice Leakey]

Is is just film sound that is missing, or is there a humming noise from all speakers?
Or, is there complete silence?
The controls on this model look like a church organ, are you sure you have selected everything necessary to play with sound?

eumig S926 GL Stereo Sound ทดสอบการใช้งาน - YouTube

[Bob Crowther]

Thanks everyone. I've tried all your very helpful suggestions but still no sound - not even a hum, complete silence. Not sure what to do next. Think I may need to find someone who repairs vintage projectors in the Keighley area.

[Maurice Leakey]

Bob
Here is a link to three printed manuals, one Instructions and two Repair Manuals.
They may be able to help you.
I can recommend this firm whom I have used for years.

Eumig S 926 Printed Manual (camera-manual.com)

[Lee Mannering]

1 The 900 models are very shall we say delicate when plugging in things to the auxiliary sockets including anything speakers.
Only plug in anything to it when switched off.

2 Speaking for my 926 938 way back I killed the amp output transistors needing to replace and since seen quite a few with the same fault. Grr.

Age will be playing a part as well as retro design I think they call it.. I replaced both transistors and the two machines are working again.

Similar experience with Yelco and Fuji machines made from the same chassis.

[Bob Crowther]

Thanks for links to the repair manuals, Maurice. I have ordered them. Also, I think Lee may be right about the transistors. The loss of sound happened immediately after plugging in speakers. I will need to find an expert to help me if that is the problem.

[Maurice Leakey]

Bob
The Van Eck site says that the amplifier contains:-
7 ICs
44 Transistors
74 Diodes
Quite a collection, so I wish you the best of luck.
Have you checked the speaker/speakers, correct impedance, also their plugs/wiring that you used before the no sound issue?

[Bob Crowther]

Checked everything I can think of with no success so looks like I’ll be sending it off for some professional repair work. It’s beyond my limited level of knowledge.

[Maurice Leakey]

Bob
Have a word with John White. Perhaps he can help you.
John White Projector Repair | Welcome (the8mmshedshop.co.uk)

[Bob Crowther]

Exactly who I was thinking of calling first thing on Monday morning. Thanks again Maurice.